AI do not use shield on explosives

planet/Objects.ocd/Helpers.ocd/AI.ocd/Script.c

@@ -243,8 +243,8 @@ private func ExecuteProtection(fx)
 			if (!PathFree(GetX(),GetY(),obj->GetX(),obj->GetY())) continue;
 			// This might hit :o
 			fx.alert=fx.time;
-			// do we have a shield?
-			if (fx.shield)
+			// Use a shield if the object is not explosive.
+			if (fx.shield && !obj->~HasExplosionOnImpact())
 			{
 				// use it!
 				if (fx.aim_weapon == fx.shield)

planet/Objects.ocd/Items.ocd/Resources.ocd/Firestone.ocd/Script.c

@@ -26,6 +26,8 @@ func Hit2()
 	return Explode(18);
 }
 
+public func HasExplosionOnImpact() { return true; }
+
 local Collectible = 1;
 local Name = "$Name$";
 local Description = "$Description$";

planet/Objects.ocd/Items.ocd/Weapons.ocd/Bow.ocd/BombArrow.ocd/Script.c

@@ -31,6 +31,8 @@ public func Hit()
 // Determines the arrow strength: only 30% that of the normal arrow.
 public func ArrowStrength() { return 3; }
 
+public func HasExplosionOnImpact() { return !!GetEffect("InFlight", this); }
+
 
 /*-- Properties --*/
 

planet/Objects.ocd/Items.ocd/Weapons.ocd/IronBomb.ocd/Script.c

@@ -87,6 +87,7 @@ public func IsDroppedOnDeath(object clonk)
 	return !!GetEffect("FuseBurn", this);
 }
 
+public func HasExplosionOnImpact() { return armed; }
 
 public func IsWeapon() { return true; }
 public func IsArmoryProduct() { return true; }